[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/07 11:21:12
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)[(3x^2
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^2-1/2y^4)
用完全平方公式展开
=(18x^2+1/2y^4)(18x^2-1/2y^4)
用平方差公式
=18^2*x^4-1/4*y^8
题目中(18x^2-1/2y^4)应该是(18x^4-1/2y^4)吧?!如果是,解题如下:
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^4-1/2y^4)
=[(9x^4 - 3x²y²+ 1/4 y^4)+(9x^4 + 3x²y²+ 1/4 y^4)](18x^4-1/2y^4)
=(18x^4 ...
全部展开
题目中(18x^2-1/2y^4)应该是(18x^4-1/2y^4)吧?!如果是,解题如下:
[(3x^2-1/2y^2)^2+(3x^2+1/2y^2)^2](18x^4-1/2y^4)
=[(9x^4 - 3x²y²+ 1/4 y^4)+(9x^4 + 3x²y²+ 1/4 y^4)](18x^4-1/2y^4)
=(18x^4 + 1/2 y^4)(18x^2-1/2y^4)
=324x^8 - (1/4)y^8
收起
x(x-y)2-(y-x)3
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
化简 3x(x^2-x-1)-(x+1)(3x^-x) X^3(x-y)+x(y-x)
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值
计算:x+2y/x-y+2x/y-x-3y/x-y
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
(3x-y)^2+(3x+y)(3x-y),x=1,y=-2
二元一次方程 :2(x+y)-(x-y)=3 (x+y)-2(x-y)=1
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y
(Y-X)^3*(X-Y)^m+(X-Y) ^m+1*(Y-X)^2